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73
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33745672062
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See also: k
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See also: k) Y.-Q. Wang, J. Song, R. Hong, H. Li, L. Deng, J. Am. Chem. Soc. 2006, 128, 8156-8157.
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(2006)
J. Am. Chem. Soc
, vol.128
, pp. 8156-8157
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Wang, Y.-Q.1
Song, J.2
Hong, R.3
Li, H.4
Deng, L.5
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74
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53549133729
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The absolute stereochemistry of 4a was determined by chiral HPLC analysis by comparison to the retention time described in the reference
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The absolute stereochemistry of 4a was determined by chiral HPLC analysis by comparison to the retention time described in the reference [3c].
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, vol.3 c
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75
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53549112256
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The powdered 3 Å molecuar sieves were activated by placing the powder under vacuum and heating with a heat gun for 10 minutes.
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The powdered 3 Å molecuar sieves were activated by placing the powder under vacuum and heating with a heat gun for 10 minutes.
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76
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7744232273
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For leading references on molecular sieves, see: a
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For leading references on molecular sieves, see: a) J. K. Thomas, Chem. Rev. 1993, 93, 301-320;
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(1993)
Chem. Rev
, vol.93
, pp. 301-320
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Thomas, J.K.1
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78
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53549112844
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When 1a and 2a were treated with 3 Å M.S. alone, 4a was obtained in 3% yield.
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When 1a and 2a were treated with 3 Å M.S. alone, 4a was obtained in 3% yield.
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